Single diaphragm forming of drapeable thermoplastic impregnated

Details Single diaphragm forming of drapeable thermoplastic impregnated Single diaphragm forming of drapeable thermoplastic impregnated

1989-06-26

1991-08-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264136, 2642974, 264316, 425389, B29C 5110, B29C 5112, B29C 5128

Patent

active

050375997

ABSTRACT:
A process for preparing non-planar thermoplastic fiber reinforced composites utilizes drapeable thermoplastic impregnated fiber reinforced prepregs in a pressure thermoforming process employing but one diaphragm. The single diaphragm when initially used is flat, but becomes deformed, following its first use, to the shape of the finished part. The diaphragm thus deformed may be repeatedly used as it will still fit over the prepreg layup.

REFERENCES:
patent: 4562033 (1985-12-01), Johnson et al.
patent: 4608220 (1986-08-01), Caldwell et al.
patent: 4770838 (1988-09-01), Cattanach et al.
patent: 4942012 (1990-07-01), Lee et al.

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